Masks are required for all visitors 2+. Vaccines recommended. Plan your visit
Watch out for stratification of objects—it's nuts.
Bike builder David Folch makes supersized bikes for supersized riders.
You’ll feel the pressure to do some heavy lifting.
Take an exclusive tour of the Hetch Hetchy water system.
Shake just right to see the light.
Bike builder David Folch builds supersized bikes for supersized riders.
Compare the brightness of two light sources with an oil spot on a white card.
Observe STEM-rich, equity-oriented tinkering for young people in Watsonville, California.
British artist Tim Hunkin discusses his whimsical Tinkerer's Clock.
Learn how you too can enjoy our activities in your kitchen, garage, classroom, and community.
Light an LED with five cents.
Surprisingly, a flat panel rolls smoothly on non-circular rollers.
(Embarcadero at Green Street)
San Francisco, CA 94111
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